Large unit oil pump sealing device and using method thereof

Abstract

The invention discloses a large unit oil pump sealing device and a using method thereof, and relates to the technical field of mechanical parts, and the large unit oil pump sealing device comprises a movable assembly which comprises a first clamping ring and a second clamping ring; a first clamping piece is arranged on the outer wall of the first clamping ring, and a second clamping piece is arranged on the outer wall of the second clamping ring. The first clamping pieces and the second clamping pieces are oppositely arranged in a staggered mode. The stabilizing assembly is arranged in the movable assembly, and a hole channel matched with the mechanical shaft is formed in the center; by arranging the first clamping pieces and the second clamping pieces which are oppositely arranged in a staggered mode, annular support can be formed during extrusion, and the stability and the sealing performance of the device are enhanced; meanwhile, the structural design of a central fixing ring, a top fixing ring and a bottom fixing ring in the stabilizing assembly is matched with a sealing ring and a connecting ring in threaded connection, so that the sealing effect is further improved, and the problems that an existing sealing device is loose in connection and insufficient in strength, and the sealing performance becomes poor easily due to vibration are solved; and a good sealing effect can still be kept under the condition of high-pressure or high-speed operation.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical parts, and in particular to a large-scale unit oil pump sealing device and a use method thereof. Background Art

[0002] During operation, components such as bearings and journals, and gears and gears experience relative motion, generating friction and wear between these moving parts. To reduce friction, minimize wear, extend equipment life, and ensure proper operation, these moving parts require effective lubrication. Lubricating oil not only forms an oil film to isolate friction but also provides cooling, cleaning, and rust prevention. The primary task of large-scale oil pumps is to deliver lubricating oil to various lubrication points on the equipment, ensuring a continuous supply and appropriate oil pressure to meet the lubrication needs of the unit system.

[0003] During normal operation, the equipment must provide the lubrication system with lubricating oil at a stable pressure. Sealing devices effectively prevent oil from leaking from the high-pressure side of the chamber, ensuring that the equipment's outlet oil pressure meets design requirements and that the oil is reliably delivered to key components, such as the unit's bearings, for optimal lubrication and cooling. A poor seal can cause a drop in oil pressure, leading to insufficient lubricating oil supply, affecting the normal operation of the oil pump unit and potentially damaging the equipment due to increased friction.

[0004] However, the existing sealing devices have loose connections, are not compact enough, have low space utilization, and lack strength and stability between structures. Slight deviations or vibrations generated by the machine may cause the sealing to deteriorate.

[0005] Based on the above problems, we propose a large-scale unit oil pump sealing device and its use method. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is: how to overcome the problems of loose connection, insufficient strength, and poor sealing due to vibration of existing sealing devices, so as to ensure that good sealing effect can be maintained under high pressure or high speed operation conditions and extend the service life of the equipment.

[0007] The above technical problems are solved by the following technical solutions: The present invention proposes a large-scale unit oil pump sealing device, which includes a movable component, including a first clamping ring and a second clamping ring; the outer wall of the first clamping ring is provided with a first clamping piece, and the outer wall of the second clamping ring is provided with a second clamping piece; the first clamping piece and the second clamping piece are arranged oppositely and alternately; a stabilizing component is arranged inside the movable component, and a channel is opened in the center to cooperate with the mechanical shaft.

[0008] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention, the first clamping piece and the second clamping piece are combined to form an annular support.

[0009] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention, an elastic member is provided between the first clamping ring and the second clamping ring.

[0010] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention, the stabilizing component includes a central fixing ring arranged inside the movable component.

[0011] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention, a top fixing ring is provided at one end of the central fixing ring, and a bottom fixing ring is provided at the other end.

[0012] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention, the top fixing ring and the bottom fixing ring have the same diameter, and the diameters of the top fixing ring and the bottom fixing ring are larger than those of the central fixing ring.

[0013] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention: the bottom fixing ring is provided with an annular groove in a direction away from the central fixing ring; a sealing ring is movably provided inside the annular groove; and the sealing ring is made of a fluororubber ring.

[0014] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention: a thread groove is formed on the top fixing ring in a direction away from the central fixing ring; and a connecting ring is movably provided inside the thread groove.

[0015] In a preferred embodiment of the large-scale unit oil pump sealing device of the present invention: the outer wall of the connecting ring is provided with a thread matching the thread groove, and the connecting ring is threadedly connected to the top fixing ring.

[0016] In a preferred embodiment of the method for using the large-scale unit oil pump sealing device described in the present invention: the movable component and the stabilizing component are sleeved on the mechanical shaft of the large-scale unit oil pump, and ensure that the stabilizing component, the connecting ring and the mechanical shaft are precisely aligned; the top fixing ring is threadedly connected to the connecting ring through a threaded groove; under the action of external force, the first clamping ring and the second clamping ring are moved relative to each other, and the first clamping piece and the second clamping piece gradually approach and merge to form an annular support structure; the elastic member provides compression force to ensure close contact to prevent lubricating oil from leaking from the high-pressure side to the outside.

[0017] The beneficial effects of the present invention are as follows: by arranging the first clip and the second clip arranged in an opposite and staggered manner, they can be combined to form an annular support during extrusion, thereby enhancing the stability and sealing of the device; at the same time, the structural design of the central fixing ring, the top fixing ring and the bottom fixing ring inside the stabilizing component, combined with the sealing ring and the threaded connection ring, further improves the sealing effect and overall strength, effectively solving the problems of loose connection, insufficient strength, and easy deterioration of sealing due to vibration of the existing sealing device, ensuring that a good sealing effect can be maintained under high pressure or high speed operation conditions, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0019] Figure 1 Shows a schematic diagram of the overall structure of the sealing device;

[0020] Figure 2 Shows a schematic diagram of the connection structure between the sealing device and the sealing ring;

[0021] Figure 3 Shows a schematic diagram of the active component connection structure;

[0022] Figure 4 shows a schematic diagram of the connection structure of the stabilizing components;

[0023] Figure 5 Shows a schematic diagram of the connecting ring structure;

[0024] Figure 6 A schematic diagram of the connection structure between the first card contact piece and the second card contact piece is shown;

[0025] Figure 7 A schematic diagram of the connection structure between the first card contact piece and the second card contact piece is shown;

[0026] Figure 8 A schematic diagram of the connection structure between the first card connecting piece and the second card connecting piece is shown. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0028] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0029] Reference Figures 1 to 8 The present embodiment provides a large-scale unit oil pump sealing device, including a movable component 1, including a first clamping ring 11 and a second clamping ring 12, the first clamping ring 11 and the second clamping ring 12 have the same diameter, and the first clamping ring 11 and the second clamping ring 12 are made of silicon carbide; the outer wall of the first clamping ring 11 is provided with a first clamping piece 111, the first clamping ring 11 and the first clamping piece 111 are fixedly connected and are integrally stamped; the outer wall of the second clamping ring 12 is provided with a second clamping piece 121, the second clamping ring 12 and the second clamping piece 121 are fixedly connected and are integrally stamped; Figures 6 to 8 As shown, the first card piece 111 and the second card piece 121 are arranged in a staggered manner in opposite directions. The first card piece 111 and the second card piece 121 can be arranged in different shapes. In this application, they are preferably rectangular, so that the first card piece 111 and the second card piece 121 have a larger contact area, which can provide stronger support and stability. When arranged in a staggered manner in opposite directions, the rectangular card pieces can effectively disperse stress and reduce local stress concentration. The stabilizing component 2 is arranged inside the movable component 1. The movable component 1 is movably sleeved on the outer wall of the stabilizing component 2. The stabilizing component 2 and the movable component 1 are both provided with a channel in the center that matches the mechanical shaft, providing stable support for the mechanical shaft and ensuring the concentricity and stability of the sealing device during operation.

[0030] In an embodiment provided in the present application, the first snap ring 11 moves toward the second snap ring 12, and at the same time, the second snap ring 12 also moves toward the first snap ring 11. During the relative movement of the first snap ring 11 and the second snap ring 12, the first snap plate 111 and the second snap plate 121 gradually approach and finally merge to form an annular support structure, which enhances the overall stability of the device and reduces the risk of poor sealing due to vibration or displacement.

[0031] In one embodiment provided in this application, Figure 3As shown, an elastic member 13 is provided between the first snap ring 11 and the second snap ring 12. The elastic member 13 is sleeved on the outer walls of the first snap ring 11 and the second snap ring 12. When the first snap plate 111 and the second snap plate 121 are merged, the elastic member 13 is in a compressed state. When the first snap plate 111 and the second snap plate 121 are completely separated, the elastic member 13 is in a released state.

[0032] In one embodiment provided in this application, Figure 4 As shown, the stabilizing component 2 includes a central fixing ring 21 arranged inside the movable component 1. The material of the stabilizing component 2 is made of furan resin-impregnated graphite. When the first clip 111 and the second clip 121 are merged, the central fixing ring 21 will undergo elastic deformation. When the first clip 111 and the second clip 121 are completely separated, the central fixing ring 21 will return to its original shape.

[0033] In one embodiment provided in this application, Figure 1 and Figure 2 As shown, a top fixing ring 22 is provided at one end of the central fixing ring 21, and a bottom fixing ring 23 is provided at the other end. The top fixing ring 22 and the bottom fixing ring 23 are both fixedly connected to the central fixing ring 21. The first snap ring 11 is movably sleeved on the outer wall of the top fixing ring 22. There is friction between the first snap ring 11 and the top fixing ring 22. When the first snap piece 111 and the second snap piece 121 are merged, the top fixing ring 22 is still wrapped around the inner wall of the first snap ring 11; the second snap ring 12 is movably sleeved on the outer wall of the bottom fixing ring 23. There is friction between the second snap ring 11 and the bottom fixing ring 23. When the first snap piece 111 and the second snap piece 121 are merged, the bottom fixing ring 23 is still wrapped around the inner wall of the second snap ring 12.

[0034] In one embodiment provided in this application, Figure 4 As shown, the top fixing ring 22 and the bottom fixing ring 23 have the same diameter, which can ensure the symmetry and balance of the overall structure of the device, so that the sealing device is evenly stressed during installation and operation, avoiding the problem of offset or deformation caused by uneven stress. Moreover, under high pressure or high speed operation conditions, the symmetrical design can effectively reduce the impact of vibration on the sealing performance, thereby improving the stability and reliability of the equipment operation; the top fixing ring 22 is used to install the connecting ring 222, providing additional support and fixing to ensure the stability of the sealing device during operation; the bottom fixing ring 23 provides bottom support to ensure that the sealing device remains stable during operation, and can be used to install the sealing ring 232.

[0035] In one embodiment provided in this application, Figure 4As shown, the diameters of the top fixing ring 22 and the bottom fixing ring 23 are larger than the central fixing ring 21. The larger top fixing ring 22 and bottom fixing ring 23 can provide a wider support surface, enhance the stability and vibration resistance of the entire device, and effectively reduce the problem of decreased sealing due to equipment deviation or vibration under high pressure or high speed operation conditions, ensuring that the sealing device maintains a good working condition for a long time; the design that the diameters of the top fixing ring 22 and the bottom fixing ring 23 are larger than the central fixing ring 21 optimizes the overall structural strength of the device. When the first clip 111 and the second clip 121 are combined to form an annular support, the top fixing ring 22 and the bottom fixing ring 23 can better wrap the first clip ring 11 and the second clip ring 12, thereby dispersing stress and reducing local stress concentration.

[0036] In one embodiment provided in this application, Figures 1 to 4 As shown, the bottom fixing ring 23 is provided with an annular groove 231 in the direction away from the central fixing ring 21. The design of the annular groove 231 provides a clear installation position and limiting function for the sealing ring 232; a sealing ring 232 is movably provided inside the annular groove 231, which can effectively prevent the lubricating oil from leaking from the high-pressure side of the sealing device to the outside; the sealing ring 232 is made of fluororubber ring; since the diameter of the bottom fixing ring 23 is larger than the diameter of the central fixing ring 21, the space in the annular groove 231 is more ample, which is convenient for the installation and replacement of the sealing ring 232, and at the same time enhances the sealing effect of the sealing ring 232; the bottom fixing ring 23 forms a stable sealing structure through the cooperation of the annular groove 231 and the sealing ring 232. During the operation of the equipment, especially under high-pressure or high-speed conditions, the sealing ring 232 can absorb part of the vibration energy and reduce the risk of sealing failure caused by vibration.

[0037] In one embodiment provided in this application, Figure 4 and Figure 5 As shown, the top fixing ring 22 is provided with a threaded groove 221 in the direction away from the central fixing ring 21. The design of the threaded groove 221 allows the connecting ring 222 to be easily installed and disassembled. When the sealing device needs to be repaired or parts need to be replaced, the disassembly can be completed by simply rotating the connecting ring 222 without the need for complicated tools or operating steps. A connecting ring 222 is movably provided inside the threaded groove 221. The connecting ring 222 can form an additional sealing barrier between the top fixing ring 22 and the mechanical shaft, reducing the risk of lubricating oil leakage.

[0038] In one embodiment provided in this application, Figure 4 and Figure 5As shown, the outer wall of the connecting ring 222 is provided with a thread 223 that matches the thread groove 221. The connecting ring 222 is threadedly connected to the top fixing ring 22. Through the threaded connection, the connecting ring 222 can be firmly installed on the top fixing ring 22 to form an integral structure, thereby enhancing the overall strength of the sealing device and being able to effectively resist loosening problems caused by equipment vibration or pressure changes, thereby ensuring the stability of the device under high-pressure or high-speed operation conditions.

[0039] In an embodiment provided in the present application, the movable component 1 and the stabilizing component 2 are sleeved on the mechanical shaft of the oil pump of a large unit, and ensure that the stabilizing component 2, the connecting ring 222 and the mechanical shaft are precisely aligned; the top fixing ring 22 is threadedly connected to the connecting ring 222 through the thread groove 221; under the action of external force, the first clamping ring 11 and the second clamping ring 12 move relative to each other, and the first clamping piece 111 and the second clamping piece 121 gradually approach and merge to form an annular support structure; the elastic member 13 provides compression force to ensure close contact to prevent lubricating oil from leaking from the high-pressure side to the outside.

[0040] When in use, the movable component 1 is sleeved on the outer wall of the stabilizing component 2, and it is ensured that the holes of the central fixing ring 21, the top fixing ring 22 and the bottom fixing ring 23 are precisely aligned with the mechanical shaft of the large unit oil pump. The first clamping ring 11 and the second clamping ring 12 of the movable component 1 move relative to each other under the action of external force, so that the first clamping piece 111 and the second clamping piece 121 gradually approach and merge to form an annular support structure. During this process, the elastic member 13 provides compression force to ensure that the first clamping piece 111 and the second clamping piece 121 are in close contact, thereby enhancing the overall stability and sealing of the device. At the same time, the stabilizing component 2 provides stable concentricity support for the mechanical shaft. The sealing ring 232 arranged in the bottom fixing ring 23 effectively prevents lubricating oil leakage, and the top fixing ring 22 is threadedly connected to the connecting ring 222 through the threaded groove 221 to further enhance the structural strength and vibration resistance of the device, ensuring that under high pressure or high speed operation conditions, the sealing device can still maintain a good sealing effect, thereby extending the service life of the equipment.

[0041] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A large-scale unit oil pump sealing device, characterized by: include, A movable assembly (1) comprises a first snap ring (11) and a second snap ring (12); The outer wall of the first clamping ring (11) is provided with a first clamping piece (111), and the outer wall of the second clamping ring (12) is provided with a second clamping piece (121); The first card connecting piece (111) and the second card connecting piece (121) are arranged in an opposite and staggered manner; The stabilizing component (2) is arranged inside the movable component (1), and has a hole in the center for matching with the mechanical shaft.

2. The large-scale unit oil pump sealing device according to claim 1, characterized in that: The first clamping piece (111) and the second clamping piece (121) are combined to form an annular support.

3. The large-scale unit oil pump sealing device according to claim 1 or 2, characterized in that: An elastic member (13) is provided between the first clamping ring (11) and the second clamping ring (12).

4. The large-scale unit oil pump sealing device according to claim 1, characterized in that: The stabilizing component (2) comprises a central fixing ring (21) arranged inside the movable component (1).

5. The large-scale unit oil pump sealing device according to claim 4, characterized in that: One end of the central fixing ring (21) is provided with a top fixing ring (22), and the other end is provided with a bottom fixing ring (23).

6. The large-scale unit oil pump sealing device according to claim 5, characterized in that: The top fixing ring (22) and the bottom fixing ring (23) have the same diameter, and the top fixing ring (22) and the bottom fixing ring (23) have larger diameters than the central fixing ring (21).

7. The large-scale unit oil pump sealing device according to claim 5 or 6, characterized in that: The bottom fixing ring (23) is provided with a ring-joining groove (231) in a direction away from the central fixing ring (21); A sealing ring (232) is movably provided inside the annular groove (231); The sealing ring (232) is made of a fluorine rubber ring.

8. The large-scale unit oil pump sealing device according to claim 7, characterized in that: The top fixing ring (22) is provided with a thread groove (221) in a direction away from the central fixing ring (21); A connecting ring (222) is movably provided inside the thread groove (221).

9. The large-scale unit oil pump sealing device according to claim 8, characterized in that: The outer wall of the connecting ring (222) is provided with a thread (223) matching the thread groove (221). The connecting ring (222) is threadedly connected to the top fixing ring (22).

10. A method for using a large-scale unit oil pump sealing device, comprising the large-scale unit oil pump sealing device according to any one of claims 1 to 9, further comprising the following using steps: The movable component (1) and the stabilizing component (2) are sleeved onto the mechanical shaft of the oil pump of the large unit, and the stabilizing component (2), the connecting ring (222) and the mechanical shaft are ensured to be precisely aligned; The top fixing ring (22) is threadedly connected to the connecting ring (222) through the thread groove (221); Under the action of external force, the first clamping ring (11) and the second clamping ring (12) move relatively, and the first clamping piece (111) and the second clamping piece (121) gradually approach and merge to form an annular support structure; The elastic member (13) provides compression force to ensure close contact and prevent lubricating oil from leaking from the high-pressure side to the outside.

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